Water-tube boiler.



' PATEN'IIED SEPT. l, 1908. L. L. SUMMERS. WATER TUBE BOILER. APPLIOATI'ON FILED JAN. 30, 1906.

4 SHEETS-SHEET 1.

. WITNESSES No. 897,322. \PATENT'ED SEPT; 1, 1908.

L. L. SUMMERS.

WATER TUBE BOILER. BPPLIOATION FILED JAN. 30, 1906M 4 SHEETS-SHEET Z.

WIITNESSES No. 897,322. PATENTED SEPT. 1, 1908. L. L. SUMMERS.

WATER TUBE BOILER.

APPLIUATION FILED JAN. 30, 19 06 4 SHEETS-SHEET 3.

Q Q Q Q 'No. 897,322. PATENTED SEPT. 1, 1908.

L. L. SUMMERS. WATER TUBE BOILER.

APPLICATION FILED JAN. 30, 1906.

4 SHEETS-SHEET 4.

, v ,0 Wm

UNITED snares LELAND L. SUMMERS, OF BARBERTON, OE}

COMPANY, on NEW YORK, N. Y.,

O, ASSIGNOR TO THE BABCOGK & \YILCOX CORPORATION OF NEW JERSEY.

WATER-TUBE norms.

Specification of Letters Patent.

- Patented Sept. 1, 1908.

Application filed January 30, 1906. Serial No. 298,618.

the top of the same, but terminating short of i T 0 all whom it may concern:

Be it known that I, LELAND L. SUMMERS, of Barberton, Summit county, Ohio, have invented a) new and useful Improvement in ,lVater-Tuibe Boilers, of which the following is a full, clear, and "xact description, reference being had to the accompanying drawings, forming part of this specification, in) w hieh- Figure 1 of the drawings. is a sectional side elevation of a water-tube boiler or generator embodying my invention; Fig. 2 is a trans-' verse section on the line IIH of Fig. 1; Fig. 3 is a horizontal section on the irregular line IIIIII of Fig. 2 Fig. 4 is a sectiona side elevation showing the invention applied to anothbr form of boiler or generator; and Figs. 5, 6 and.7 are detail sectional views of different forms of ldngit-udinall baffling which may be employed.

My invention relates more particularly to an improvement in that type of water tube generator in which the tubes are inclined upwardly and rearwardly front the front, with an enlarged furnace space at the rear of the furnace, and with a reverberatory arch or covering extending over a portion of thetop of the furnace. i

The object of the present improvement is to provide a free and unobstructed passage for the gases or products of combustion, and yet to divert or guide them in such a manner as to confine them to the spaces occupied by -the tubes of the water tube generator, and more particularly to insure a maximum length of passage in contact with such tubes and also a maximum velocity of flow.

To this end my invention consists in the arrangement of baffling whereby the gases are forced to travel in a longitudinal direction parallel with the-tubes, this passage being preferably from the furnace forwardly longitudinally with the tubes at each sideof the generator, and thence rearwardly longitudinally through the central tubes, and thence up and outward thropgh the breeching or opening to the. chimney or stack; By thus confining the gases to a longitudinal and arallel movement with the tubes, the cleaning of the baffling and of the tubes is greatly facilitated, and counterciu'rents and eddies due to cross-impingemcnt are, avoided.

In the drawings, 2 designates the combustion chamber or furnace having the reverbcratory arch or coveringnl extending over its rear end so as to provide a transversely extending opening l, through which the gases pass upwardly to the tubes.

5 designates the upwardly and rearwardly inclined tubes extending from the front headers 6 to the rear headers 7.

8 is a steam and water drum to which the headers 6 are connected in the usual or any suitable manner, and 9 is the usual mud drum.

10 is the furnace grate.

11 is a transversely arranged baffle, which extends vertically upward from the rever- 1 bcratory arch or covering 3 to the horizontal top wall o plate 1 2. This bafllingis placed a short distance forwardly of the forward edge of the opening 4, and is at the central portion of the generator only, leaving'a free space at either side, as clearly shown in Fig. 3. Extending forwardly from the ends, of the baffling 1 l are longitudinal vertical bafllings 13,

'which extend forwardly to a point a short plate space or opening 11 ture of this bafiling with tl distance from the front end of the generator; and which extend upwardly from the roverberator arch or covcrin 3 to the to )late or covering 12.

14 is a transverse baffle wall of the same length as the baffle 11, which extends from the top of the tubes to the top casing 12.

15 is a longitudinally.

vertical longitudinal baffles 13 and extend-' ing rearwardly from the lower 'end of the wall 14 towards the baffle 11, with the intermediate opcning 16 through which the gases from the last pass escape and passupwardly through the. stackopening 17.

At the point where the vertical transverse baffling 11 joins the reverberatory archer covering 3, it is desirable to leave a slight for the purpose of permitting a slight leakage of the gases directly into the tube space which connnunicates with the stack, thereby tending to'avoid any dead spaces in the corners or points of juncic rcverberatory arch or covering. 'lhis opening 1 I" may be made wide enough to )erniit all accumulated soot, ash, &c., to be blown into the furnace space by means of a steam lance or jet inserted at the front of the boiler, 'lhis permits all cleaning to be done from the front and enables the boilers to be placed more closely together.

extending bafllc' resting on top of the tubes between the.

g bailie plate 35 to the opening 16, and thence or piece 1%? of fire-briclr or ot to tire stack. In. this manner the gases,. throughout substantially their entire travel, pass ins direction parallel with the tubes.

The longitudinalba g9 13 preferably so arranged as to permit the substantial utilination of tbelieating surfaces of the lines of tubes where these baiiiiugs are placed. Figs. 5, 6 and 7 illustrate three different forms of such baffling. The construction shown in lug. 5 consists of two converted metal plates 18, whose edges are fitted to the ad acent tubes 5, and between which is placed a plate or refractory material, the whole being tied together by the bolts in the construction shown in big. 6, tbs intermediate refractory member oi baffling is omitted and the two metallic pla 18 used alone. This form may be employed where the batile is exposed to a medium temperature only. In. the construction shown Fig. 7, the balliing consists of one of the metal plates 18 and the refractory member 19, the latter being ex posed in use to the higher temperature. By emoloying bau'iling of these constructions, it will be apparent tliat insulation of the adjacent tubes is avoided and their heating surfaces are made largely available.

in Fig. i l have shown my improved arnent of baiiiing ap died to another to n or generator, in wllicli the headers 6 between which extenr the upper inclined tubes 5, are placed at right angles to the exes oi the tubes, instead of vertically, as int e form. first described. In this form the .sverse bail" i1 is preferably placed rulzstantially p lel with the headers. This type of boiler also employs a series of lower t .n

XLPS extending between the headers 23 itb an intermediate expansion chamber 24. arrangement of baiides is in all respects similar to that first d scribcd, is also the circulation ol gases eilccted thereby.

it will be obvious that my improved urrangcuient milling is applicab.c to other forms of i tube generators thanv those herein (lest. ed, and that various cl'iangos may be made in the details thereof without departing from the spirit and scope of my inve .tion.

' out i is senses upward path for the gases, transverse and longitudinally arranged bafilin s arranged to form forwardly extending ongitudinal side passes for the gases, and also a central rearwardly extending pass communicating at the front with the side passes and with the stack at the rear, substantially as described.

2. In a water tube generator of the class described, a reverberetory arch or covering extending partially over the furnace, an upward passage for they gases between the end wall oi the furnace and the reverberatory arch or covering, a transverse vertical baffle or bafliings extending upwardly and entirely across the tubes in a vertical direc tion, but leaving clear spaces at each side, and subsequent longitudinal baffles or baffling arranged to cause the gases to follow a path parallel with the tubes of the generator, substantially as described.

3. In a water tube boiler having a reverberatory arch or covering extending partially over the furnace, with an upward pass for the gases at the uncovered portion of the being provided between the lower edge of the transverse baiile and the said arch or covering for communication with the said central pass, substantially as described.

4. A water tube boiler having front and rear headers connected. by longitudinal water tubes, a furnace below said tubes, at bori zontal battling or reverberatory arch extending over the furnace from one end for a portion of its length and located at or near the bottom of the series of tubes, a verticsllyextending cross battle at the flue end of the borizontalbafile arranged to give an upward pass to the gases transversely of the tubes, said vertical baffle extending only aart of the width of the series of tubes, and lbngitudinal befllings arranged to give forward and back passes for the gases long1tudinally of .the tubes before passing to the stack, substantially as described.

5. A Water tube boiler having front and rear headers connected to inclined water tubes, a horizontal baffle or root extending from one end of the furnace short of the other end'aml leaving a flue at said other end, a vertical cross baffle extending upwardly'fi'om tbeflue end of the roof, said vertical baflleoccupying the central portions oi the tubes and terminating short of the sides of the series of tubes, and longitudinal battles extending from its side edges forwardly and causing the gases to divide and flow lon itudinally of the tubes in one direc tion an. thence unite and flow backwardly substantially as described.

whieh are inclined rearwardly and upwardly,

6. A water tube bo iler having front-and. rear headers connected by water tubes a horizontally extending roof or bafi'le ex tending from the front end'of the furnace and terminating short of its rear endforlning arearwardly enlarging c'onibustion chamber With an upwardly opening flue at its-rear end, a vertical transverse bafileextending upwardly from the rear portion of' the roof and extending only apart'of thefiyidth of the series of'tubes; and a longitudlh'al b'uiigin arranged to direct the gases in forward and back passes longitudinally of the tubes before passing to the outlet flue,- substantially as described. I Y

7. A water tube boiler havin front and rear headers connected by inc ined water tubes, a horizontal baffle extending from one I united in the endofthe furnace fora portion of its length cal direction but only a part of the Width of the series of tubes in a horizontal direction,

and longitudinal vertical baflies extending from the vertical baffle and causing thegases to flow longitudinally of the tubes through two passes; the gases dividing in one of said vlongituc linal passes andbeing other, substantially as deand located-near the bottom of'the'series ofextending completely to the roof in a vertiscribed. e I

in testimony whereof, I have hereunto set myhan'd. a

' I I LELAND L. SUltiM-ERS;

Witnes'ses:

JAs. P. SN EDDON WALTERJ; LUCAS. 

